php 如何使这个 preg_match 不区分大小写？
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How do I make this preg_match case insensitive?
提问by GianFS
Consider:
考虑：
preg_match("#(.{100}$keywords.{100})#", strip_tags($description), $matches);
I'm trying to show only 100 characters in each side with the search string in the middle.
我试图在每边只显示 100 个字符，中间是搜索字符串。
This code actually works, but it is a case sensitive. How do I make it case insensitive?
这段代码实际上有效，但它区分大小写。我如何使它不区分大小写？
回答by donald123
Just add the imodifier after your delimiter #:
只需i在分隔符后添加修饰符#：
preg_match("#(.{100}$keywords.{100})#i", strip_tags($description), $matches);
If the imodifier is set, letters in the pattern match both upper and lower case letters.
如果i设置了修饰符，则模式中的字母将同时匹配大写和小写字母。
